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United States v. Cappaert

Cattle ranchers are ordered to limit their pumping of underground water to quantities that will maintain a high enough water level in nearby Devils Hole pool, in the Death Valley National Monument, to preserve the pupfish, an endangered species that inhabits the pool. The Presidential Proclamation of January 7, 1952, which withdrew the Devils Hole pool from the public domain, implicitly reserved enough groundwater to sustain the unique pupfish and legally established the government's rights as against any future appropriation.